Works Cited
“Air Pollution.” Family Doctor.org. 22 Apr. 2008 <http://familydoctor.org/‌online/‌famdocen/‌home/‌common/‌asthma/‌triggers/‌085.html>.

Air Pollution in China Photograph. AP Photo Archive. Power Library Database.
Hempfield High School Lib. Landisville, Pa. 29, April 2008. http://apimages.ap.org/default.aspx.


Black, Richard. “More Species Slide to Extinction.” BBC News. 22 Apr. 2008 <[[http://news.bbc.co.uk/‌2/‌hi/‌science/‌nature/‌4963526.stm%3E.|http://news.bbc.co.uk/‌2/‌hi/‌science/‌nature/‌4963526.stm>.]]

Campbell, Neil A., and Jane B. Reece. Essential Biology. Ed. Beth Wilbur and
Erin Milligan. San Francisco: Addison Wesley Longman, Inc., 2001.

“Cost of greenhouse gas emissions reducitions.” Berkele Lab. Lawerence Berkeley National Laboratory. 29 Apr. 2008
<[[http://enduse.lbl.gov/‌Projects/‌GHGcosts.html|http://enduse.lbl.gov/‌Projects/‌GHGcosts.html>.]]

“Indoor and Outdoor Air Pollution.” Lawrence Berkeley National Laboratory. 30 Apr. 2008 <[[http://www.lbl.gov/‌Education/‌ELSI/‌ELSI.html%3E.|http://www.lbl.gov/‌Education/‌ELSI/‌ELSI.html>.]]

Introduction to Ecology: Ecosystems and Biomes . Discovery Education School.
unitedstreaming. 2008. Discovery Education. 11 May 2008
<http://www.unitedstreaming.com/>.

Nissley, Jeremy. Personal interview. 5 May 2008.

“Pollution.” MSN Encarta. 2007. 23 Apr. 2008 <[[http://encarta.msn.com/‌encyclopedia_761570933/‌Pollution.html%3E.|http://encarta.msn.com/‌encyclopedia_761570933/‌Pollution.html>.]]

Pollution
unitedstreaming. Discovery Education. 22 Apr. 2008 <http://www.unitedstreaming.com/>.
Reece, Jane B, and Neil A Campbell. Essential Biology. New York: Benjamin Cummings, 2001.

Poor boys at a Manila garbage dump, 1978.. IRC. 2005.
unitedstreaming. 11 May 2008
<http://streaming.discoveryeducation.com/>

"Waste." Green Peace International. 1 May 2008 <http://www.greenpeace.org/

international/campaigns/nuclear/waste>.
“What is acid rain?” U.S. Environmental Protection Agency. 4 Apr. 2008. 21 Apr. 2008 <[[http://www.epa.gov/‌acidrain/%3E.|http://www.epa.gov/‌acidrain/>.]]